81746140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{479}}^1$

素因数の和:571

約数の個数: 96

約数和(自身を含む): 209018880

約数和(自身を除く): 127272740

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 53, 70, 92, 106, 115, 140, 161, 212, 230, 265, 322, 371, 460, 479, 530, 644, 742, 805, 958, 1060, 1219, 1484, 1610, 1855, 1916, 2395, 2438, 3220, 3353, 3710, 4790, 4876, 6095, 6706, 7420, 8533, 9580, 11017, 12190, 13412, 16765, 17066, 22034, 24380, 25387, 33530, 34132, 42665, 44068, 50774, 55085, 67060, 77119, 85330, 101548, 110170, 126935, 154238, 170660, 177709, 220340, 253870, 308476, 355418, 385595, 507740, 583901, 710836, 771190, 888545, 1167802, 1542380, 1777090, 2335604, 2919505, 3554180, 4087307, 5839010, 8174614, 11678020, 16349228, 20436535, 40873070, 81746140]

約数ペア:

[(1, 81746140), (2, 40873070), (4, 20436535), (5, 16349228), (7, 11678020), (10, 8174614), (14, 5839010), (20, 4087307), (23, 3554180), (28, 2919505), (35, 2335604), (46, 1777090), (53, 1542380), (70, 1167802), (92, 888545), (106, 771190), (115, 710836), (140, 583901), (161, 507740), (212, 385595), (230, 355418), (265, 308476), (322, 253870), (371, 220340), (460, 177709), (479, 170660), (530, 154238), (644, 126935), (742, 110170), (805, 101548), (958, 85330), (1060, 77119), (1219, 67060), (1484, 55085), (1610, 50774), (1855, 44068), (1916, 42665), (2395, 34132), (2438, 33530), (3220, 25387), (3353, 24380), (3710, 22034), (4790, 17066), (4876, 16765), (6095, 13412), (6706, 12190), (7420, 11017), (8533, 9580)]